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Old 23rd July 2011, 06:10 PM   #1
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Default My OPAMP original or copy?

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good evening

I am a Korean

This is OPA627BP(China), OPA637BP(USA Nevada Reno )[ARROW.com]

OPA637BP $26.36

OPA627BP 40元 → $6.20

I would like to Authenticity Test

Please let us know how

winter0316 ??? ? ?? ? ??? ← My blog
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Old 4th August 2011, 02:01 AM   #2
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Here is a picture of OPA627AP from Digikey.
They run quite warm compared to plain op-amps. They are laser-trimmed so you might have ones that did not meet specification.
Otherwise, I am not sure why they are so cheaply priced from China.
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Old 4th August 2011, 05:12 AM   #3
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Default Thank

Thanks

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Texas Instruments Burr brown
manufactory ━▶ Thailand

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Burr brown Burr brown
manufactory ━▶ ????? TAIWAN ??
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Old 4th August 2011, 05:44 AM   #4
mirlo is offline mirlo  United States
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Usually, the place of manufacture printed on IC packages is where the die was packaged, ie the package mfr, not the semiconductor manufacturer.
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Old 4th August 2011, 11:06 AM   #5
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Surplus items may be sold much cheaper than the regular products,so they become cheaper.I think an opamp does not age by years,can be used as new after ten years so can be bought much cheaper.
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Old 4th August 2011, 11:13 AM   #6
just another
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Hi winter0316 try uploading the pictures as attachments

here are a few of the images in the original post.

Tony.
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File Type: jpg 1312434580_627bp down_conv.jpg.jpg (28.4 KB, 23 views)
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